Edexcel A Level In GCE Statistics (9ST0/1) Paper 1:data/probability +mark scheme
JUNE 2025
Candidate surname Other names
Centre Number Candidate Number
Paper
Statistics
□ □
Advanced
PAPER 1: Data and Probability
Marks
Statistical formulae and tables booklet, Calculator
Candidates may use any calculator allowed by Pearson regulations.
Calculators must not have retrievable mathematical formulae stored in them.
Instructions
•• Use black ink or ball‑point pen.
• Fill
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
in the boxes atcandidate
the top of number. this page with your name,
• Answer
centre number and
all questions and ensure that your answers to parts of questions are
• Answer
clearly labelled.
the questions in the spaces provided
• You – there may be more space than you need.
should show sufficient working to make your methods clear.
• Unless
Answers without working may not gain full credit.
otherwise stated, inexact answers should be given to three
• Unless
significant figures.
otherwise stated, statistical tests should be carried out at the 5%
significance level.
•• There
Information
are 9 questions in this question paper. The total mark for this paper is 80.
A booklet ‘Statistical formulae and tables’ is provided.
•Advice
–Thuesemtahrikssafsoar geuaicdhe aqsu et os thi oonwam
reucs h otwimn eintobsr apceknedtson each question.
•• Read each question carefully before you start to answer it.
•• Try to answer every question.
Check your answers if you have time at the end.
If you change your mind about an answer,
cross it out and put your new answer and any working underneath. Turn over
P76381A
©2025 Pearson Education Ltd.
,Y:1/1/1/1/1/1/1/1/
, Answer ALL questions. Write your answers in the spaces provided.
1 The stem and leaf diagram below shows the number of points scored by the
DO NOT WRITE IN THIS AREA
Los Angeles Lakers basketball team in the first 19 games of the 2019–2020 season.
9|5 represents
Points Totals
95 points
9 5 5 9 (3)
10 2 3 4 9 (4)
11 2 4 4 8 9 (5)
12 0 0 0 2 3 5 (6)
13 0 (1)
[Source: www.basketball‑reference.com]
(a) Find the median and the interquartile range for these data.
(3)
DO NOT WRITE IN THIS AREA
Figure 1 shows a box and whisker diagram containing information about the number
of points scored by the Los Angeles Lakers basketball team in the first 19 games of the
2020–2021 season.
DO NOT WRITE IN THIS AREA
90 95 100 105 110 115 120 125 130 135 140
Figure 1
[
2
■■
, Question 1 continued
(b) Compare the average and the spread of the points scored by the Los Angeles Lakers
DO NOT WRITE IN THIS AREA
in these two seasons.
(4)
DO NOT WRITE IN THIS AREA
(Total for Question 1 is 7 marks)
DO NOT WRITE IN THIS AREA
3
■■ Turn over
JUNE 2025
Candidate surname Other names
Centre Number Candidate Number
Paper
Statistics
□ □
Advanced
PAPER 1: Data and Probability
Marks
Statistical formulae and tables booklet, Calculator
Candidates may use any calculator allowed by Pearson regulations.
Calculators must not have retrievable mathematical formulae stored in them.
Instructions
•• Use black ink or ball‑point pen.
• Fill
If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
in the boxes atcandidate
the top of number. this page with your name,
• Answer
centre number and
all questions and ensure that your answers to parts of questions are
• Answer
clearly labelled.
the questions in the spaces provided
• You – there may be more space than you need.
should show sufficient working to make your methods clear.
• Unless
Answers without working may not gain full credit.
otherwise stated, inexact answers should be given to three
• Unless
significant figures.
otherwise stated, statistical tests should be carried out at the 5%
significance level.
•• There
Information
are 9 questions in this question paper. The total mark for this paper is 80.
A booklet ‘Statistical formulae and tables’ is provided.
•Advice
–Thuesemtahrikssafsoar geuaicdhe aqsu et os thi oonwam
reucs h otwimn eintobsr apceknedtson each question.
•• Read each question carefully before you start to answer it.
•• Try to answer every question.
Check your answers if you have time at the end.
If you change your mind about an answer,
cross it out and put your new answer and any working underneath. Turn over
P76381A
©2025 Pearson Education Ltd.
,Y:1/1/1/1/1/1/1/1/
, Answer ALL questions. Write your answers in the spaces provided.
1 The stem and leaf diagram below shows the number of points scored by the
DO NOT WRITE IN THIS AREA
Los Angeles Lakers basketball team in the first 19 games of the 2019–2020 season.
9|5 represents
Points Totals
95 points
9 5 5 9 (3)
10 2 3 4 9 (4)
11 2 4 4 8 9 (5)
12 0 0 0 2 3 5 (6)
13 0 (1)
[Source: www.basketball‑reference.com]
(a) Find the median and the interquartile range for these data.
(3)
DO NOT WRITE IN THIS AREA
Figure 1 shows a box and whisker diagram containing information about the number
of points scored by the Los Angeles Lakers basketball team in the first 19 games of the
2020–2021 season.
DO NOT WRITE IN THIS AREA
90 95 100 105 110 115 120 125 130 135 140
Figure 1
[
2
■■
, Question 1 continued
(b) Compare the average and the spread of the points scored by the Los Angeles Lakers
DO NOT WRITE IN THIS AREA
in these two seasons.
(4)
DO NOT WRITE IN THIS AREA
(Total for Question 1 is 7 marks)
DO NOT WRITE IN THIS AREA
3
■■ Turn over
